160 BOTANY. gated, naked, and terminated by a single head 1^-2" in diameter; involucre with scales in about four series, all distinctly nerved, the outer ovate, obtuse, the inner lanceolate, acute; ligules persistent (fading away into a pale sulphur color), 2-3-toothed at the apex ; achenium (ray) 3-angled, rounded, and papUlose on the outer side; disk-flowers narrowly tubular; achenia 4-angled; chaff hardly as long as the flower.—Chiricahua Agency, Southern Arizona (536). My specimens are apparently much larger-flowered than those of Mr. Wright, on which the species was founded. They came, however, from near his locality. Gymnolomia* multifloea, Benth. & Hook. (Heliomeris multiflora, Nutt)—A very variable plant. Nevada, Arizona, Utah, Colorado (779, 551). See vol v. King's Report, p. 1 70. Rudbeckia LACINIATA, L.—(171 of Locw.) Saugrc de Cristo Pass, Colorado. Rudbeckia columnaeis, Pursh, var. pulcheeeima. (Lepachys columnaris, T. & G., ^. pulcherrima, Don.)—Erect, simple, or branching from the base, strigose-pubescent; earhest leaves lanceolate and entire; stem-leaves pin¬ nately parted, with linear divisions, petioled; upper ones similar, but sessile ; disk columnar, 9-15" long and 4" wide; ray-flowers dark purple, reflexed, 6" long and 4" wide.—Zuni Village (159), and also collected by Dr. Oscar Loew in White Mountains of Arizona. Var. Tagetes. (Lepachys columnaris, var. Tagetes, Gray, Pl. Wright 1, p. 106.)—Similar to the above except in having small yellow or brown rays and a shorter disk. Arkansas Valley, Colorado (24, Loew) ; Valley of the Rio Grande, above Albuquerque (85). Rudbeckia hieta, L. (apparently).—Trout Creek, Colorado (549, 550). Rudbeckia occidentalis, Nutt—Utah. Balsamoehiza sagittata, Nutt.—Northern Nevada and Utah. * Gymnolomia, H. B. et IC—Heads heterogamous, radiate ; rays 1-seried, neutral; disk-flowers per- fect,fertile. Involucre hemispherical or broadly campanulate; bracts in 2-3 series, exterior herbaceous and a little shorter, interior thinner, all narrow, or rarely with the exterior or interior enlarged. Eeceptacle convex or conical; chaff concave and embracing the disk-flowers. Bay-flowers ligulate, spreading, entire or dentate. Disk-flowers regular; tube short or with a somewhat dilated base. Anthers entire at base or with two small auricles. Styles of the disk-flowers obtuse or sometimes terminated by a short, acute appendage. Achenia of the ray-flowers narrow, empty; of disk-flowers sub-compressed, 4-angled, obtuse at apex (in our species destitute of pappus).—Erect, branching herbs.—Benth. & Hook.